Evaluate the Efficacy and Safety of TQC2731 Injection in Patients With Severe Asthma.

NCT ID: NCT05472324

Last Updated: 2025-11-20

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2
• Total Enrollment: 205 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-09-23
• Study Completion Date: 2025-03-05

Brief Summary

This is a phase II, multicenter, double-blind, randomized, parallel group, placebo-controlled clinical study to evaluate the effect of three doses of TQC2731 on Annualized Asthma Exacerbation Rates(AAER) in adult subjects with poor control of severe asthma. It is estimated that 220 subjects will be included. The subjects will receive TQC2731 (70 mg Q4w, 210 mg Q4w, 420 mg Q4w) or placebo (Q4w) administered by Subcutaneous (SC) in the ratio of 1:1:1:1.

The study comprised a 5 to 6-week screening period, a 52-week treatment period and a 12-week follow-up period. During the treatment period, the study drug will be administered from day 0 until week 48. The study drug was not administered at the 52nd week.

Conditions

Severe Asthma

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

Placebo

Placebo, subcutaneous administration, 4 weeks as a treatment cycle.

Group Type: PLACEBO_COMPARATOR

Placebo

Intervention Type: DRUG

The drug is a placebo Comparator.

TQC2731 injection 70 mg

TQC2731 injection 70 mg, subcutaneous administration, 4 weeks as a treatment cycle.

Group Type: EXPERIMENTAL

TQC2731 injection

Intervention Type: DRUG

TQC2731 is a humanized monoclonal antibody based on human thymic stromal lymphopoietin (TSLP) sequence.

TQC2731 injection 210 mg

TQC2731 injection 210 mg, subcutaneous administration, 4 weeks as a treatment cycle.

Group Type: EXPERIMENTAL

TQC2731 injection

Intervention Type: DRUG

TQC2731 is a humanized monoclonal antibody based on human thymic stromal lymphopoietin (TSLP) sequence.

TQC2731 injection 420 mg

TQC2731 injection 420 mg, subcutaneous administration, 4 weeks as a treatment cycle.

Group Type: EXPERIMENTAL

TQC2731 injection

Intervention Type: DRUG

TQC2731 is a humanized monoclonal antibody based on human thymic stromal lymphopoietin (TSLP) sequence.

Interventions

TQC2731 injection

TQC2731 is a humanized monoclonal antibody based on human thymic stromal lymphopoietin (TSLP) sequence.

Intervention Type: DRUG

Placebo

The drug is a placebo Comparator.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• 1 Age. 18-75
• 2 Documented physician-diagnosed asthma for at least 12 months before visit 1.
• 3 Subjects who have received a physician-prescribed asthma controller medication with medium or high dose inhaled glucocorticosteroid (ICS) for at least 12 months before visit 1.
• 4 Documented treatment with a total daily dose of either medium or high dose ICS for at least 3 months before visit 1.
• 5 At least one additional maintenance asthma controller medication such as Long acting β2 receptor agonist (LABA), leukotriene receptor antagonist (LTRA), theophylline, Long-acting muscarinic antagonists (LAMA), sodium cromoglycate, etc. is required according to standard practice of care and must be documented for at least 3 months.
• 6 Morning pre-BD FEV1 <80% predicted normal At visit 2 or visit 2a.
• 7 Evidence of asthma as documented by either: Documented historical reversibility of FEV1 ≥12% and ≥200 mL in the previous 12 months before visit 1 OR Post-BD (albuterol/salbutamol) reversibility of FEV1 ≥12% and ≥200 mL during screening At visit 2 or visit 2a.
• 8 Documented history of at least 2 asthma exacerbation events within 12 months before visit 1.
• 9 ACQ-6 score ≥1.5 at visit 1
• 10 Body weight ≥ 40 kg at visit 1.

Exclusion Criteria

• 1 Pulmonary disease other than asthma.
• 2 History of cancer.
• 3 Current smokers or subjects with smoking history ≥10 pack-years.
• 4 Hepatitis B, C, human immunodeficiency virus (HIV) or Syphilis.
• 5 History of anaphylaxis following any biologic therapy.
• 6 History of chronic alcohol or drug abuse within 12 months.
• 7 History of a clinically significant infection.
• 8 Pregnant or breastfeeding.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Chia Tai Tianqing Pharmaceutical Group Co., Ltd.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

GUANGZHOU FIRST PEOPLE's HOSPITAL

Guangzhou, Guangdong, China

The First Affiliated Hospital of Zhengzhou University

Zhengzhou, Henan, China

Countries

China

Other Identifiers

TQC2731-II-01

Identifier Type: -

Identifier Source: org_study_id